Malicious PDF — malware analysis report

Static analysis result for SHA-256 5278960ece8e0323…

MALICIOUS

PDF

68.2 KB Created: 2020-11-13 05:05:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1662325bab17853c8ba14d8a688defae SHA-1: b2541864bca6ec0bb11970c2c58e22de28d42698 SHA-256: 5278960ece8e0323e76be924be18228008604054bf740a96de0b09ed00cf65d8
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ML classifiers and ClamAV as malicious. It contains an embedded URI pointing to 'traffset.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, contains a title that could be used as a lure. No scripts were extracted, but the presence of external URIs and the high confidence verdict suggest an attempt to redirect the user to a malicious resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://traffset.ru/123?utm_term=dog+whining+at+night+for+no+reason
    • https://batagokefo.weebly.com/uploads/1/3/1/0/131070859/00bc7e54cbe76.pdf
    • https://xolawawasaxigu.weebly.com/uploads/1/3/4/5/134587427/tegibipizejape.pdf
    • https://zowupenejanelaw.weebly.com/uploads/1/3/4/3/134397621/4216741.pdf
    • https://kidofepakanuzok.weebly.com/uploads/1/3/4/0/134096393/zafenizubirok-zogipi-gaxige.pdf
    • https://cdn-cms.f-static.net/uploads/4366375/normal_5f88b7839373e.pdf
    • https://cdn-cms.f-static.net/uploads/4375353/normal_5f8b684a26bdf.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/181d0863-7ff6-4a95-ab3e-7fdf4901ec98/61940910200.pdf
    • https://s3.amazonaws.com/viboxikuz/jiwuwevavaxakelugevarefup.pdf
    • https://uploads.strikinglycdn.com/files/6f16ccd7-401a-45c4-a613-2e308e001fba/selutojofamesotifazovov.pdf
    • https://s3.amazonaws.com/paropabaru/garrison_property_and_casualty_insurance_company_claims.pdf
    • https://uploads.strikinglycdn.com/files/5333450d-7a00-4995-82ff-4afbd8d61c4c/lepidibofejulit.pdf
    • https://s3.amazonaws.com/zakunafu/throne_of_fire_free.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ce28.bin
8262e9f768cd6620aff2f5277de0fda448f7b1040b682a0c32bbb7d3ecfb3ba8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCE28 5088 bytes
font_01_sfnt_off0000df8d.bin
4effa563216fe46345bb610bee45ec41b69c98db999a4094f68913645cd98cfd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDF8D 10684 bytes

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